Elements and Compounds Quiz

Which of the following is an example of an element?

• Water

• Salt

• Oxygen

• Sugar

What is a characteristic of compounds?

• Have a fixed chemical formula

• Exist in a limited number

• Cannot be split into simpler substances

• Made of one type of atom

How many types of elements are known to mankind?

• 50

• 118

• 200

• Unlimited

What happens when hydrogen and oxygen combine chemically?

• They form salt

• They form sugar

• They form water

• They form gold

Why is gold considered a pure substance?

• It is made of multiple types of atoms

• It can be split into simpler substances

• It has a variable chemical formula

• It is made of only one type of atom